我正在使用这样的脚本：
rsync -avu --delete --progress user@host:~/backup .
每次过一段时间后，都会收到此错误：
rsync: connection unexpectedly closed (10251754 bytes received so far) [receiver]
rsync error: error in rsync protocol data stream (code 12) at io.c(226) [receiver=3.1.0]
rsync: connection unexpectedly closed (45482 bytes received so far) [generator]
rsync error: unexplained error (code 255) at io.c(226) [generator=3.1.0]
# generator = Debian 5, rsync version 3.0.3 protocol version 30 (Generator[A])
# receiver = Ubuntu 14.04, rsync version 3.1.0 protocol version 31 (Receiver[A])
我有十多年的经验rsync，我尝试了所有方法，但我无法弄清楚为什么会发生这种情况。
双方：我在日志中没有错误，在 …